La Grange, WI, United States · Saturday, November 7, 2026

Fixed Distance 50K

tBunk Endurance Challenge 50 Km Night

52 days away

50 km Distance

1,400 m Climbing

4.6 Grit · Challenging

41.8050° N, 87.8692° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 28 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Field size ~3 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (31.2mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, November

Daytime high 8°C

Night low -1°C

Rainfall Mostly dry

Daylight 10 h 10 m of light

Regional 2001-2020 average for November — NASA POWER, grid elevation 231 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail with 1,400 m of ascent.

Trail Running Shoes28 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition50 km of self-supported fuelling between aid stations.
Hydration VestsPole attachment and chest-strap stability on steep ground.
Trekking Poles1,400 m of ascent to walk up.
GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Adidas